Latvian State Institute of Wood Chemistry, Dzerbenes Str., 27, Riga, LV-1006, Latvia.
Laboratory of Cell Biology, Institute of Microbiology and Biotechnology, University of Latvia, Jelgavas Str., 1-537, Riga, LV-1004, Latvia.
Appl Microbiol Biotechnol. 2023 Feb;107(2-3):535-542. doi: 10.1007/s00253-022-12353-8. Epub 2023 Jan 6.
Studies on the chemical mechanisms of furfural formation showed the possibility to apply a new differential catalysis of hemicellulose - its depolymerisation and pentose dehydration to furfural. This change led to the increase in furfural yield and essential decrease of cellulose destruction. The lignocellulose residue that remains after the production of furfural may be subjected to enzymatic hydrolysis to glucose and the subsequent fermentation to ethanol. The remaining lignin appeared to be suitable for the production of additional various value-added products including medicinal mushrooms and laccase-containing enzyme complexes. Based on these developments, an innovative concept is proposed for the waste-free use of lignocellulose to obtain various valuable products. KEY POINTS: • New chemical mechanism of furfural production. • New lignocellulose pretreatment does not damage cellulose and lignin. • Lignocellulose may be processed using waste-free technology.
糠醛形成的化学机制研究表明，有可能应用半纤维素的新型差向催化——其解聚和戊糖脱水生成糠醛。这种变化导致糠醛产率增加，纤维素破坏显著减少。生产糠醛后剩余的木质纤维素残渣可进行酶解转化为葡萄糖，然后发酵为乙醇。剩余的木质素似乎适合生产其他各种高附加值产品，包括药用蘑菇和含漆酶的酶复合物。基于这些发展，提出了一个创新的概念，即无废物利用木质纤维素获得各种有价值的产品。
糠醛生产的新化学机制。
新型木质纤维素预处理方法不破坏纤维素和木质素。
木质纤维素可采用无废物技术进行加工。
